Motor-vehicle headlamp



MOTOR VEHI CLE HEADLAM P Filed May l9 1923 `lower edge of the visor.

es 1: easements' MGTGEfVEHICLE BLM?,

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To all 'whom it may concern:

Be it known that l, HUGH Bohemen (lens, a citizen of the United Statesci nierice, and a residentm Philedelihimonnty of Philadelphia," endState or Pennsylvanie, have invented certain new and useful lmprovementein Motor-Vehicle Headlamps, of which the following is e :hill and clearspecilicetion.

The motor vehicle head-lamp visor is variously made, but in general itis molded in e single piece with the front-glass of the lamp. It isvariously shaped and varies in its distance from iront-glass tovisortip, and from the upper rim of the lamp to the This head-lamp visorhas two purposes-to blank oi o centain cross-section of the front-glassat the upper rim oi? the lamp to obstruct the light rays' normallypassing et on u ward ton gent from the reectorfiind to etiect these raysdownward tower-ol the rood surface. The head-lamp visor accomplisheshot-h oi" these urposes. incident, however, to the election of the lightrays downward, there results en increase in the difculty odetermininogrom the drivers 'seat in the car, the

conflitlon of the lights. The stray light-rsys which, in theunvisoredlamp, :tall noon a. nearby object (fender, hood, humperg enelthus disclose the condition of the lights and, in the visorefl lamp,either greatly or alto gether deflected away from such objects. Undernieny conditions oi' twilight, smoke, haze, muiier-gas in trac, bri htnearhy lights, it is practically impossih e to determine from theVdriving seat of the car whether the lights ere or are' not hui-ningevent' in the nnvisored lamp; in the visoreoilamp the will he severalldevices snit-sible for the pur-g diculty is much increased.

I t is the purpose of my invention to provide means whereby thedrivervof the oer, in his driving seat, may determine, at o. glance, thecondition of his lights, no inatter what the 4she-pe or width or depth.of the visor. This l accomplish hy attaching to the visor s tell-talewhich will pick up e rey 0i light from within the visor and deliver itto e point on the lamp or sfijacent thereto, visihleroin therlrivingeeot oi the csr. De pending upon the shape of the visor, therepose ci my invention.

ln the deswing Fig. Il is s iront elevation, anni Fig. 2 is e. verticeisectional view of s.

headlight showing my invention applied thereto.

Referring to the drawing ennexed'by reference characters, 5 designatesthe visor of nsnal shape cest integral with the glass lens 5, Cestintegral with the upper convex sur face ot the visor is an upstonclingtuhe 7 whose lower end opens into the cavity of the visor through seid.top wall. Within the visor et e oint justbelow the open end of the tube7 is e reectingv surface 8 set at an angle to reect upwardly the raysfrom either the dimmer globe or 'the moin globe located within the usuelparabola reflecting shell 9.

The light rays from one or the other of l the globes is reflect-ed b theparabolic sur-A foce 9 onto the incline mirrored surface 8 anzi thenceare tleected upwardl into the tube 7, where they strike against t e wallof ythe tube and are reiected beckwordly out oi the tube, over the topof the lamp. The inner ysurface of the tube 7 will he a. reflectingsurface, this reilecting surface being ohteinefl by either placing emirror therein or 'frosting the exterior surface of the glass tube, Thereecting sui-fece 8 may be obtained either hy o. mirror or hy frostingthe outer surface of the visor well orwells.

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lt will he observed from the fore oing that the invention consists intaking s cam of light from e point within the visor and delivering; itto e point exterior of the lamp which is visible from the driving-seatof the car, this constituting the tell-tele of the condition ot thelights within the cer. lt will he understood that l do not confinemyself to the exact construction illustrated, as the seme may he variedwithout departing Jrom the spirit of the invention. For instance, it isnot absolutely essential that the visor shell be molded integral withthe lens, nor is` i i said visor-also having a tell-tale reflectingsurface adapted to receive the rays from he afoesaid reflecting surfaceand reflect them rearwardly 3. In a head-lamp for motor ears, a visorformed integral with the lens; and having an opening m its top Wellandan interior reflecting surface adapted to reflect. the rays upwardlythrough said opening, and en infor motel' ears', a lane mem-aw having a.visor Whose top wall is provided with a lighbemtting area and theinterior of the visor being provided with u dellectlng Y aforesaidupvitally-reflected rays of light` and deflect them rearwardly over thetop of the head-lump.

In testimony whereof l. heieunto zilix my signature.

HUGH R. CARR.

